private static void SetupParticipatingLayouts(DockItem dockItem)
{
var sourceOfdockItemsControl =
dockItem.GetSelfAndLogicalAncestors().OfType <ItemsControl>().FirstOrDefault() as DockItemsControl;
if (sourceOfdockItemsControl == null ||
(sourceOfdockItemsControl.Items as ICollection).Count != 1)
{
return;
}
var draggingWindow = dockItem.GetSelfAndVisualAncestors().OfType <Window>().First();
if (draggingWindow == null)
{
return;
}
foreach (var loadedLayout in LoadedLayouts.Where(l =>
l.Partition == dockItem.PartitionAtDragStart &&
!Equals(l.GetSelfAndVisualAncestors().OfType <Window>().FirstOrDefault(), draggingWindow)))
{
loadedLayout.IsParticipatingInDrag = true;
}
}